[ben M]

Have a look at the roof tiles and you may find these are made from a type of black compressed substance (sorry not technical when it comes to roof tiles) have a few on my round and due to constant run off from these black roof tiles the upvc are stained for life and nothing will get them clean ... when I quote now always tell em if its green it will come off no issues but cant guarantee end result with black stains ... never had a problem


good luck !! 

Thanks Ian, it is what i thought, it is coming from the tiles!

[Griffus]

Have a look at the roof tiles and you may find these are made from a type of black compressed substance (sorry not technical when it comes to roof tiles) have a few on my round and due to constant run off from these black roof tiles the upvc are stained for life and nothing will get them clean ... when I quote now always tell em if its green it will come off no issues but cant guarantee end result with black stains ... never had a problem


good luck !! 

Thanks Ian, it is what i thought, it is coming from the tiles!

Where else could it have come from? 

This will usually still clean as per my earlier reply.

[SB Cleaning]

I have done a big house 6 months ago, there were some black stains on the white upvc gutters, i couldn't remove them with virosol and hot water! back today,even worse,most of the gutters have black stains now   Any idea what could mark the gutters like that? sorry no pic, too high. what can i use whithout a ladder to clean them?

Many thanks

Ben

Hi Ben

Go on Ebay and look for a product called the "pink stuff" it will take those black marks off with ease and also revives dull cills to a new look you have to apply it with a rag though and rinse straight away with water..hope this helps